Die-stock.



H. B. MILLER.

DIE STOCK.

APPLICATION FILED IIAIIB. Ism. RENEWED APR. 2I. me.

l 273,082. Patented July 16, 1918.

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HARRY B. MILLER, or sYEAcUsE, NEW YORK.

DIE-STOCK.

Appli-cation filed March 8, 1917, Serial No. 153,475. Renewed April 27, 1918.

To all whom it may concern.'

Be it known that I, HARRY B. MILLER, a citizen of the United States, and resident of Syracuse in the county of Onondaga, in the State of lew York, have invented new and useful Improvements in Die Stocks, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improve men-ts in die stocks, and to automatic, oil feeds for the same.

The primary object of the invention is to produce a device of this character capable of operation uponarticles of various sizes within a relatively extensive range of diameters.

A further object is to provide automatic and positive lubrication for the device.

Other objects and advantages relatev to the construction and the details of the same, for

.accomplishing the above objects in a simple,

inexpensive and efficient manner, as will appear from the following description taken in connection with the accompanying drawings, in which- Figure l is atop plan view vice.

Fig. 2 is a side elevation of the same.

Fig. 3 is a cross sect-ion on lineJ 3-8, Fig. l.

of um` de- Fig. 4 is a cross section on llinea- 4, Fig. 2. Y

Fig; 5 is a cross section on line 5-5, Fig. 4.

The stock comprises the usual base -1- having the usual adjustable sectional dies 2 held in place by bolts 3 and fl, and the collar -5- alined with the opening between the dies -2-- and adapted to receive the boss .-6- formed in connection with the base 7 of a cylindrical casing 8 comprising Vin connection with said base a cap -9-- having a depending flange telescoped outside said base.

The cap -9- may be secured to the base -7- in any suitable manner, as by screws -10- having a threaded engagement with the base and positioned in the slot-s -l1 formed in the cap #-9- concentric with a central opening -12- in registration with the opening between theJ dies -2-.

Within the casing -8- is positioned a plurality of guide wheels -13- rotatably mounted upon slidable bars 14- mounted to reciprocate in slots -15- formed in the Specification of Letters Patent.

Patented July 16, 1918.

serial No. 231,280.

Lip-standing wall of the base -7- so that the wheels or rollers -13- may be adjusted toward and from each other to receive between them articles, such as pipes, to be threaded, of varying diameters.

For the purpose of simultaneously moving al1 of the wheels or rollers radially of the casing -8-, each bar -14- is provided with a groove or depression -16- in which is adapted to lit and slidably move one of a.I series of elongated, preferably curved, cam surfaces 17- eccentrically arranged with respect to the cylindrical casing -8- and formed preferably integrally with and depending from the cap -9- so that upon rotation of the cap in one direction the bars d1dand their respective wheels -13- are moved inwardly and upon reverse rotation are moved outwardly to vary the operativearticle-receiving opening between the wheels. When the proper adjustment of the wheels is obtained `by rotation of the cap -9- relatively to base 7, the parts may be held in their desired position by any suitable means, as by tightening the screws --10-v or by the use of an. additional means, such as thumb screw -18-.

The grooves or depressions in the bars lilhave their bordering walls formed on arcuate lines so as to substantially lit thel cam surfaces -17-.

A spring -19- is provided having one end -20- engaged with the base -7 and its opposite end -21- engaged with the cap -9- for normally holding the bars -14 at their limit of outward movement. rllhis normal positioning of the parts may be reversed or re-arranged'in any way, the spring constituting a means for preventing rattling or removal'of the parts.

The cap -9- is provided with a central opening Q2-,registering with the opening between the Vwheels '-13- and the opening between the sectional dies -Q. For the purpose of automatically and 'positively supplying oil, particularly kto theV die portions of the device, the cylindrical casing -8 carries a cylindrical oil chamber ,-28# closed at its top by a flexible plate -24- of any suitable material, such as sheet tin, and having a passageway -25- in i-ts bottom communicating with a pipe -26- carried by sleeve -27- having a threaded engagement with the recessed lower portion 28- of the casing forming the chamber #23. The pipe -26- leads downwardly and terminates adjacent the sectional dies -2- to discharge oil thereon. The pipe -29- leads to and is connected with one of the handles -30 of the stock,

- 2S- and provided at its upper end with ia ball or enlargement 3aheld in substantial contact with the under surface of plate -24- bywa spring -35- when the valve -33- is closed.

For the purpose'of automatically operating the valve -33- and for drawing oil into the chamber -23- throughV pipe -29-, one of the wheels -13- is provided with an upwardly projecting cam or ball surface -36- adapted in the rotation of said wheel to contact with one end -37- of a lever B8- pivoted at 3Q- upon the base -7 and having its opposite end -40- in substantial contact with the up perfsurface of the flexible plate -24, pref.- erably directly above the ball B4- As the end -37 of lever 38- is raised by contact of cam -36- during the rotary movement of the wheel -13, the end A40- is depressed, depressing the central portion of :plate Q4- opening the valve -33- against the action of spring 35- and allowing the discharge of oil through the pipe -26-- When 4the plate 24- by its own action returns to normal substantially planular condition, the vacuum produced in cham- Y ber -23- draws any oil that may be in pipe -29 into the chamber and the depression of plate 2anot only opens valve -33- but positively forces the oil from the chamber. Y

Preferably, the wheel 1B- having the cam surface -36- is roughened or formed with teeth upon its edge to constitute a friction surface necessitating a positive rotation of the same in contact with the article to be threaded.

.without departing from this invention as set forth in the appended claims.

What I claim is f 1' l. In a die stoclgdie members, a movable guiding member, an oil chamber, and means operated by the movement of said guiding member for discharging oil from said chamber to lubricate the. die members.

2. In a die stock, die members,'a rotatable guiding member,an oil chamber, and means operated by the rotation of said guiding iember for discharging oil from. said chamer. A

3. In a die stock, die members, a rotatable guiding member, an oil chamber having an outlet, a valve controlling said outlet, and means operated by the rotation of said guide member for operating said valve.

4. In a die stock, die members, a rotatable guiding member having a cam surface, an oil chamber having an outlet and a flexible top, a valve closing said'outlet and having its stem in substantial contact with said flexible top, a pivoted Vlever having one end in contact with said HeXible top and its opposite end in the path of said cam surface.

5. Ina die stock, die members, a rotatable guiding member, an oil chamberVV having an koutlet for discharging oil to lubricate the die members, a valve for said outlet, and means actuated by the rotation of said guiding member for actuating said valve.

6. In a die stock, die members, a rotatable guiding member having a cam surface, an oil chamberhaving an outlet for discharging oilto lubricate the die members, a'valve for said outlet, and a lever having one end adapted for contact with said cam surface upon-rotation of said guiding member wiereby the valve is actuated to discharge oi Y. Y

VIn witness whereof I have hereunto set my hand this 30th day of March, 1916. Y

HARRY B. ruimer..

Vitnesses:

E. A. THOMPSON, M. VIoLAVI-IOWLAND.

Gople of this patent may be obtained for ve cents each, by addressing the Commissioner o atents, n Washington, D. c. 

